Table隔行變色的JavaScript代碼

效果示範代碼: <br /><table id="datatable"><tr><td>指令碼之家</td></tr><tr><td>www.jb51.net</td></tr><tr><td>指令碼之家</td></tr><tr><td>www.jb51.net</td></tr><tr><td>指令碼之家</td></tr><tr><td>www.jb51.net</td></tr><tr><td>指令碼之家</td></tr><tr><td>www.jb51.net</td></tr></table><p>
[Ctrl+A 全選 注:如需引入外部Js需重新整理才能執行]

核心代碼:複製代碼 代碼如下:function showtable(){
var color1 = "rgb(234,240,255)";
var color2 = "rgb(255,255,255)";
var bgColor = "rgb(255,255,193)";
var trs = document.getElementById("datatable").getElementsByTagName("tr");
for (var i=0;i<trs.length-1;i++){
if (i%2==0) {
trs[i].style.backgroundColor=color1;
trs[i].onmouseover = function(){
this.style.backgroundColor = bgColor;
}
trs[i].onmouseout = function(){
this.style.backgroundColor = color1;
}
} else {
trs[i].style.backgroundColor=color2;
trs[i].onmouseover = function(){
this.style.backgroundColor = bgColor;
}
trs[i].onmouseout = function(){
this.style.backgroundColor = color2;
}
}
}
}